Ingenieurwissenschaften und zugeordnete Tätigkeiten
Filtern
Erscheinungsjahr
- 2019 (229) (entfernen)
Dokumenttyp
Sprache
- Englisch (202)
- Deutsch (26)
- Mehrsprachig (1)
Schlagworte
- Mechanochemistry (14)
- Nanoparticles (13)
- Boehmite (12)
- Surface functionalization (12)
- Laser-induced periodic surface structures (LIPSS) (10)
- Nanocomposites (10)
- SAXS (10)
- In situ (9)
- TED-GC-MS (9)
- Applications (7)
- Epoxy (6)
- Femtosecond laser (6)
- Femtosecond laser ablation (6)
- Microplastics (6)
- Atomic Force Microscopy (AFM) (5)
- Corrosion (5)
- Cyclization (5)
- Electron microscopy (5)
- MALDI-TOF MS (5)
- MIC (5)
- Nanoparticle (5)
- Polylactide (5)
- Rigid amorphous fraction (5)
- Broadband dielectric spectroscopy (4)
- Catalysis (4)
- Klebfestigkeit (4)
- Laser-induced X-ray emission (4)
- Laser-induced periodic surface structures, LIPSS (4)
- Mikroplastik (4)
- Nanocomposite (4)
- Polymers of intrinsic microporosity (4)
- Radiation protection (4)
- Reference materials (4)
- Simulation (4)
- Specific heat spectroscopy (4)
- Thin films (4)
- Traceability (4)
- Ultrashort laser material interaction (4)
- XRD (4)
- Absorption edge tomography (3)
- Additive manufacturing (3)
- Analytik (3)
- Analytische Zentrifuge (3)
- AuNP (3)
- Bending modulus (3)
- Carbon nanotubes (3)
- Catalyst (3)
- Cement (3)
- Corrosion monitoring (3)
- Crosslinking (3)
- Dielectric spectroscopy (3)
- Discotic Liquid Crystals (3)
- Dosimetry (3)
- EPMA (3)
- Flash DSC (3)
- Geant4 (3)
- Haftfestigkeit (3)
- Harmonisation (3)
- Inter-laboratory comparison (3)
- LLG (3)
- MCS (3)
- MOF (3)
- Microdosimetry (3)
- Micromagnetism (3)
- Monte-Carlo simulation (3)
- Mueller-Matrix imaging ellipsometry (3)
- Nanofibers (3)
- OOMMF (3)
- Particle size distribution (3)
- Polycarbonate (3)
- Polymer (3)
- Polymer blends (3)
- Polymers (3)
- Polyurethane (3)
- Rigidity (3)
- Small-angle scattering (3)
- Spectroscopic ellipsometry (3)
- Spectroskopic Imaging (3)
- Synthesis (3)
- X-ray scattering (3)
- XPS (3)
- AFM (2)
- ALD-Hybridprozesse (2)
- Acoustic levitation (2)
- Additive Manufacturing (2)
- Adhäsion (2)
- Adsorbed layer (2)
- Al2O3-Schichten (2)
- Atomic Layer Deposition (2)
- BAMline (2)
- BDS (2)
- Biofilm (2)
- Biofilmbildung (2)
- Brechungsindex (2)
- C3A (2)
- CAT-Technologie (2)
- Copolymer (2)
- Corrosion inhibition (2)
- DNA (2)
- DNA damage (2)
- Delayed addition (2)
- EOS (2)
- EU FP7 project NanoValid (2)
- Early hydration (2)
- Electron probe microanalysis (EPMA) (2)
- Ellipsometrie (2)
- Energy deposit (2)
- Exchange interaction (2)
- Ferromagnetism (2)
- Glass transition (2)
- Haftvermittler (2)
- High-pressure (2)
- Interphase (2)
- Iridium-titanium mixed oxides (2)
- Kleb- und Haftfestigkeit (2)
- LEE (2)
- Landau Lifshitz equation (2)
- Laserschutz (2)
- Localised corrosion (2)
- Magnesium alloy (2)
- Magnetic moment (2)
- Materialbearbeitung (2)
- Mehrprobenprüfung (2)
- Mesoporous thin films (2)
- Metal–organic frameworks (2)
- Microstructure (2)
- Mikroskaliert (2)
- Molecular masses (2)
- Monte Carlo (2)
- Müller-Matrix-Ellipsometrie (2)
- NEXAFS (2)
- NanoSIMS (2)
- Nanocharacterisation (2)
- Nanomaterialien (2)
- Nanomechanics (2)
- Nanoplastics (2)
- Nanoskaliert (2)
- Nanostructure (2)
- Normung (2)
- OH radicals (2)
- Oberflächenenergie (2)
- Oberflächengeometrie (2)
- Object oriented micromagnetic framework (2)
- Oxidation (2)
- Polycarboxylate ether (PCE) (2)
- Polyethylene (2)
- Polymer bilayer coatings (2)
- Polymer nanocomposites (2)
- Radiationtherapy (2)
- Radioactive decay (2)
- Resonance frequency (2)
- Röntgenemission (2)
- Sekundärstrahlung (2)
- Silica nanoparticles (2)
- Silicon (2)
- Small angle scattering (2)
- Small-angle X-ray scattering (2)
- Software (2)
- Standardisation (2)
- Stochastic Landau Lifshitz Gilbert equation (2)
- Structural anomalies (2)
- Structural inhomogenities (2)
- Surface modification (2)
- Synchrotron (2)
- Synchrotron tomography (2)
- TMDSC (2)
- Temeprature scaling (2)
- Thermal degradation (2)
- Thin polymer films (2)
- Thin polymeric films (2)
- UV degradation (2)
- Ultrakurze Laserpulse (2)
- VAMAS (2)
- VSSA (2)
- Verbundfestigkeit (2)
- X-ray and electron diffraction (2)
- X-ray diffraction (2)
- low energy electrons (2)
- particle scattering (2)
- 2,6-diaminopyridine (1)
- 3D coherence scanning interferometry (CSI) (1)
- 3d structuring (1)
- AEROSIL® OX50 (1)
- AET (1)
- AFM-IR (1)
- AISI 304L (1)
- Acrylamide (1)
- Additiv (1)
- Additives (1)
- Admixtures (1)
- Advanced Materials (1)
- Advanced materials (1)
- Ageing (1)
- Alite (1)
- Alkoxysilanes (1)
- Alpha (1)
- Analysis (1)
- Anatase (1)
- Antibacterial (1)
- Antifouling surface coatings (1)
- Antifriction coefficient (1)
- Antiviral activity (1)
- Artificial weathering (1)
- Atomic force microscopy (1)
- Atomic fraction (1)
- Automation (1)
- Bacterial adhesion (1)
- Ball milling (1)
- Beamline (1)
- Bestimmung der Messunsicherheit (1)
- Beta decay (1)
- Biofunctional Molecules (1)
- Bloch wall (1)
- Boehmite alumina (1)
- Boehmite nanoparticles (1)
- Brachytherapy (1)
- Broadband dielectric microscopy (1)
- Bulk material (1)
- Bulk temperature (1)
- Bundesoberbehörden (1)
- Böhmit (1)
- C-C coupling (1)
- C3S (1)
- COK-12 (1)
- Cancer (1)
- Cancer treatment (1)
- Carbon fibers (1)
- Catalysts (1)
- Catechol (1)
- Cationic photocuring (1)
- Cell size (1)
- Cement admixtures (1)
- Cement hydration (1)
- Centrifugal Adhesion Testing (1)
- Centrifugal Adhesion Testing (CAT) (1)
- Centrifugal Force (1)
- Certified reference materials (1)
- Certified standards (1)
- Cluster (1)
- Co (1)
- Co-crystal (1)
- Cobalt (1)
- Cobalt and zinc oxides (1)
- Cocrystal (1)
- Coherent exchange (1)
- Comparability of Measurement Results (1)
- Compressive Stress (1)
- Conference (1)
- Coupled corrosive and mechanial load (1)
- Coupled corrosive/mechanical load (1)
- Cristobalite frameworks (1)
- Crosslinking density (1)
- Curie temperature (1)
- Curing (1)
- Curved surfaces (1)
- Cyclic (1)
- Cycloaliphatic epoxy oligosiloxane (1)
- Cycloalyphatic epoxy oligosiloxane (1)
- DIN EN ISO/IEC 17025:2018 (1)
- DRIFTS (1)
- Damping factor (1)
- Definition of nanomaterial (1)
- Degradation (1)
- Density Functional Theory (1)
- Deuterium (1)
- Diffraction (1)
- Dispersion of nano materials (1)
- Domain wall (1)
- Double complex salts (1)
- Dynamic heterogeneity (1)
- Dünne Schichten (1)
- EC4SafeNano (1)
- EMPIR (1)
- Electrical conductivity (1)
- Electrochemical deposition (ECD) (1)
- Electrochemical sensing (1)
- Electromagnetic radiation (1)
- Electromagnetic scattering (1)
- Electrospun fibers (1)
- Elemental composition (1)
- Ellipsometric porosimetry (1)
- Ellipsometry (1)
- Energetic Materials (1)
- Energiedissipation im Kontakt (1)
- Epoxy conversion degree (1)
- Epoxy-Anhydrid Duroplast (1)
- Europium (1)
- Exchange length (1)
- Exposed metal sites (1)
- FTIR (1)
- FTIR spectroscopy (1)
- Facilitated activation (1)
- Fast scanning calorimeter (1)
- Fast scanning calorimetry (1)
- Fast scanning calormetry (1)
- Fe (1)
- Fe-Ni (1)
- Fiber Bragg grating (FBG) (1)
- Filters (1)
- Fluid-flow (1)
- Fluorescence (1)
- Forschungsstrategie (1)
- Friction (1)
- Fully aromatic frameworks (1)
- Functionalized nanographene (1)
- GUM-compliance (1)
- Gamma (1)
- Gas separation membranes (1)
- Geant4-DNA (1)
- Geology (1)
- Ggraphene polymer nanocomposite (1)
- Glucose (1)
- Gold (1)
- Gold Nanoparticle (1)
- Gold Nanoparticles (1)
- Graphene (1)
- Graphene Oxide (1)
- Graphene polymer nanocomposite (1)
- Grating (1)
- Grenzfläche als Material (1)
- Hamonisierung (1)
- Heating oil tanks (1)
- High specific surface area (1)
- High-entropy alloys (1)
- Human umbilical cell adhesion (1)
- Hydration (1)
- Hydrogen (1)
- Hydrothermal synthesis (1)
- Härte (1)
- IIT (1)
- IR spectroscopy (1)
- ISO (1)
- ISO 14577 (1)
- ImAFM (1)
- Infrared nano AFM (1)
- Instrumented Indentation Testing (1)
- Instrumentierte Eindringprüfung (1)
- Instrumentierte Eindringprüfung (IIT) (1)
- Inter-laborator comparison (1)
- Interfaces (1)
- Intermodulation (1)
- Intermodulation AFM (1)
- Intermodulation-AFM (1)
- Introduction (1)
- Iron (1)
- Kinetics (1)
- Knoevenagel condensation (1)
- Kompaktierbarkeit (1)
- Kompressibilität (1)
- Korrosion (1)
- Korrosionsüberwachung (1)
- Kunststoff (1)
- LC / MALDI-TOF-MS coupling (1)
- LC x ESI-TOF-MS (1)
- LC-MS (1)
- LCCC (1)
- LEVASIL 50/50 (1)
- LL equation (1)
- Lactide (1)
- Landau Lifshitz Gilbert equation (1)
- Large-pore (1)
- Laser processing (1)
- Laser-induced nanostructures (1)
- Laser-modified surface (1)
- Layer-by-layer deposition (1)
- Leichtbau (1)
- Levitation (1)
- Linear polyglycerol (1)
- Liquid Crystals (1)
- Liquid crystals (1)
- Luminescence (1)
- MALDI TOF MS (1)
- MOF-74 (1)
- MPI (1)
- MPLS (1)
- Magnet coupling (1)
- Magnetic Nanoparticles (1)
- Magnetic anisotropy (1)
- Magnetic interacion (1)
- Magnetic nanoparticle (1)
- Magnetic nanoparticles (1)
- Magnetic swimmers (1)
- Magnetization dynamics (1)
- Magnetocoloric (1)
- Martensite (1)
- Mass spectrometry (1)
- Mass spectrometry of polymers (1)
- Material Science (1)
- Material characterization (1)
- Materials Science (1)
- Materials science (1)
- Mehr-Proben-Prüfverfahren (1)
- Melting (1)
- Mesoporous Silica (1)
- Mesoporous iridium-titanium mixed oxides (1)
- Mesoporous mixed metal oxide films (1)
- Messtechnik (1)
- Messunsicherheit (1)
- Metal carbides (1)
- Metal organic framework (1)
- Metal phosphonates (1)
- Metal reducing bacteria (1)
- Metal-organic-frameworks (1)
- Methanogens (1)
- Metrology (1)
- Microanalysis (1)
- Microbeam analysis (1)
- Microbial (1)
- Microbiologically Influrenced Corrosion (MIC) (1)
- Microbiologically influenced corrosion (1)
- Microencapsulation (1)
- Microplastic (1)
- Microwave synthesis (1)
- Milling (1)
- Mixed-linkers (1)
- Modelling (1)
- Moisture (1)
- Molecular mobility (1)
- Monte-Carlo (1)
- Mueller-Matrix Ellipsometry (1)
- Multiphoton laser structuring (1)
- Multivariate data analysis (1)
- Mussel-inspired adhesives (1)
- NP (1)
- Nano (1)
- Nano particle (1)
- Nano screening (1)
- NanoValid (1)
- Nanocasting (1)
- Nanoconfinement (1)
- Nanokomposit (1)
- Nanomaterial Properties (1)
- Nanomechanical properties (1)
- Nanometrology (1)
- Nanoparticle Characterization (1)
- Nanoparticle size measurement (1)
- Nanoparticular TiO2 (Anatase) (1)
- Nanoporous (1)
- Nanorods (1)
- Nanoscale (1)
- Nanosecond laser (1)
- Nanosecond laser irradiation (1)
- Nanostructure quantification (1)
- Nanotechnologie (1)
- Neel wall (1)
- Neuartige Materialien (1)
- Ni (1)
- Nickel (1)
- Niedrigenergie-Polymeren (1)
- Nitrene[2+1]cycloaddition (1)
- Nitrides (1)
- Non-destructiv testing (1)
- Non-destructive testing (1)
- Non-destructuve testing (1)
- Non-spherical shape (1)
- Nonclassical crystallization (1)
- Oberflächenanalytik (1)
- Oberflächenmesstechnik (1)
- Oberflächenpotential (1)
- Oberflächensteifigkeit (1)
- Oberflächentechnik (1)
- Optical fibers (1)
- Optical near field (1)
- Ordered mesoporous silica (1)
- Oxocobaltates (1)
- Oxygen Evolution Catalyst (1)
- Oxygen evolution reaction (1)
- Oxygen evolution reaction (OER) (1)
- Oxygen reduction reaction (1)
- P25 (1)
- PC characterisation (1)
- Pair Distribution Functions (1)
- Paramagnetism (1)
- Particle (1)
- Particle accretion (1)
- Particle size (1)
- Phase mask (1)
- Phase transition (1)
- Phosphinine (1)
- Phosphonates (1)
- Phosphorus (1)
- Photocuring (1)
- Photooxidation (1)
- Plasmon resonance (1)
- Plasmonic nanofocusing spectroscopy (1)
- Plastikstrategie (1)
- Polarization spectroscopy (1)
- Polyethylene glycol (1)
- Polymer aging (1)
- Polymer-based nanocomposites (1)
- Polymeric membrane (1)
- Polypropylene (1)
- Pore size tailoring (1)
- Post-modification by L-cysteine (1)
- Practical aspects (1)
- Pre-standardisation (1)
- Prediction (1)
- Protein (1)
- Proton cunductor (1)
- Prüftechnik (1)
- Qualitätssicherung (1)
- ROPPOC (1)
- Radiation damage (1)
- Radioactive NP (1)
- Real-time infrared spectroscopy (1)
- Reconstructed ion chromatograms (1)
- Recycling (1)
- Recycling-by-design (1)
- Reference Nanomaterials (1)
- Regulation (1)
- Resonance (1)
- Rh-Ir alloys (1)
- Rietveld (1)
- Ring-expansion polymerization (1)
- Ring-opening polymerization (1)
- Risstrajektorie (1)
- Rosin (1)
- SEC (1)
- SEM (1)
- SEM/EDS/STRATAGem (1)
- SIMS (1)
- SKPM (1)
- Salicylate (1)
- Scanning electrochemical microscope (SECM) (1)
- Scattering (1)
- Self-lubricating coating (1)
- Service life (1)
- Shape-controlled (1)
- Si-Ge (1)
- Silane (1)
- Single-source precursors (1)
- Size distribution (1)
- Small-angle x-ray scattering (1)
- Sonochemical synthesis (1)
- Specific Surface Area (BET) (1)
- Spectroscopic Imaging (1)
- Spektrale Ellipsometrie (SE) (1)
- Spin (1)
- Spontaneous emulsification (1)
- Stand der Normung (1)
- Standardization (1)
- Standardization of Ellipsometry (1)
- Steel (1)
- Stereocomplex (1)
- Stimuli-responsive polymers (1)
- Stochastic Landau Lifshitz equation (1)
- Structural defects (1)
- Structures under extreme conditions (1)
- Struvite (1)
- Sulfidation (1)
- Sulfur (1)
- Superparamagnetism (1)
- Surface Chemical Transformation (1)
- Surface characterization (1)
- Surface charge (1)
- Surface structures (1)
- Suzuki-Miyaura coupling (1)
- Synchrotron CT (1)
- Synchrotron radiation (1)
- TGA-FTIR (1)
- Tara Mediterranee (1)
- Temperature effects (1)
- Temperature modulated differential scanning calorimetry (1)
- Tensile Stress (1)
- Thermal extraction-desorption gas chromatography mass spectrometry (1)
- Thermo-responsive polymers (1)
- Thermogravimetry (1)
- Thermoplastics (1)
- Thin film systems (1)
- TiO2 (1)
- TiO2 nanoparticle (1)
- Tin(II)octanoate (1)
- Titanium dioxide (1)
- ToF-SIMS (1)
- Topometry (1)
- Topotactic phase transitions (1)
- Total scattering analysis (1)
- Toxicity (1)
- Transformation pathways (1)
- Tribology (1)
- Two-Photon Polymerization (1)
- Two-dimensional hexagonal boron nitride(h-BN) (1)
- UCST polymers (1)
- UV Weathering (1)
- Ultrafast scattering (1)
- Ultrashort laser pulses (1)
- Uncertainty budget (1)
- Uncertainty budgets (1)
- Wastewater (1)
- Wear (1)
- Weißlichtinterferenzmikroskopie (WLIM, 3D) (1)
- White light interference microscopy(WLIM) (1)
- X-Ray Imaging (1)
- X-Ray imaging (1)
- X-ray Absorption Spectroscopy (1)
- X-ray Photoelectron Spectroscopy (XPS) (1)
- X-ray absorption spectroscopy (1)
- X-ray imaging (1)
- X-ray spectroscopic techniques (1)
- X-ray spectroscopy (1)
- XAFS (1)
- XANES (1)
- Zeolitic Imidazolate Frameworks (1)
- Zeta potential (1)
- Zinc oxide (1)
- attraktive Wechelwirkung (1)
- beta particle (1)
- clustered nanoparticles (1)
- dielectric spectroscopy (1)
- gamma ray (1)
- gas separation membranes (1)
- mechanical properties (1)
- molecular mobility (1)
- nanoindentation (1)
- performance test (1)
- polymers (1)
- polymers of intrinsic microporosity (1)
- polynorbornenes (1)
- product specification (1)
- radiolysis (1)
- shape control (1)
- temeprature dependent exchange length (1)
- uncertainty (1)
- µ-XRF (1)
Organisationseinheit der BAM
- 6 Materialchemie (229) (entfernen)
Eingeladener Vortrag
- nein (95)
This presentation reviews current and expected developments in the field of laser-induced periodic surface structures (LIPSS, ripples). These surface nanostructures are a universal phenomenon and can be generated on almost any material by irradiation with intense linearly polarized radiation. LIPSS are formed in a “self-ordered” way and are often accompanying laser material processing applications. The structures can be produced in a single-step process and enable surface functionalization through the adaption of optical, mechanical and chemical surface properties. Their spatial periods typically range from several micrometers down to less than 100 nanometers, exhibiting a clear correlation with the polarization direction of the laser radiation used. Various types of LIPSS have been classified, relevant control parameters were identified, and material specific formation mechanisms are analyzed for different types of inorganic solids, i.e., metals, semiconductors, and dielectrics, through time-resolved optical experiments and theoretical simulations. Special attention will be paid to a comparison of the currently available formation theories for LIPSS with a discussion of their respective strengths and weaknesses. Currrently explored applications featuring surface functionalization in the fields of optics, surface wetting, medicine, and tribology will be discussed.
This presentation reviews the current state in the field of Laser-induced Periodic Surface Structures (LIPSS). These surface nanostructures are a universal phenomenon and can be generated on almost any material by irradiation with intense linearly polarized laser radiation. LIPSS are formed in a “self-ordered” way and are often accompanying material processing applications. They can be produced following a single-step process and enable surface functionalization through the adaption of optical, mechanical and chemical surface properties. Their structural sizes typically range from several micrometers down to less than 100 nanometers exhibiting a clear correlation with the polarization direction of the laser radiation. Various types of surface structures are classified, relevant control parameters are identified, and their material specific formation mechanisms are analyzed for different types of inorganic solids, i.e., metals, semiconductors, and dielectrics, through time-resolved optical experiments and theoretical simulations. Finally, technological applications featuring surface functionalization in the fields of optics, fluidics, medicine, and tribology are discussed.
Mechanochemistry paves the way to simple, fast, and green syntheses. Despite considerable effort, there is a lack in understanding of the underlying mechanisms. In situ investigations help to understand these mechanisms, which occur during a mechanochemical reaction. Here we present a universal strategy for simultaneous real-time in situ analysis, combining X-ray diffraction, Raman spectroscopy, and thermography. The potential of of our approach is shown for diffrent model reactions.
The properties of fiber-reinforced polymers (CFRP) or concretes (ECC) strongly depend on the interface between the fiber and the surrounding matrix. Different methods such as plasma oxidation, chemical or electrolytic etching and chemical vapor deposition have been investigated to increase, for example, the bonding strength. The present study deals with the functionalization of the fiber surface based on laser-induced periodic surface structures (LIPSS). They can be characterized as a modulation of the surface topography on the nano- and microscale that results from the irradiation of the surface with linearly polarized laser radiation close to the ablation threshold. According to their spatial period, LIPSS are classified into low-spatial frequency LIPSS (LSFL) and high-spatial frequency LIPSS (HSFL). The great potential of both types of LIPSS structures regarding functional surface properties was demonstrated in numerous investigations. The objective of the present study was the homogenous manufacturing of both types of LIPSS on large areas of carbon fiber arrangements without damage. The results are discussed based on a detailed analysis of the topographic and chemical surface properties.
Laser-induced periodic surface structures (LIPSS, ripples) are a universal phenomenon that can be observed on almost any material after the irradiation by linearly polarized laser beams, particularly when using ultrashort laser pulses with durations in the femtosecond to picosecond range. During the past years significantly increasing industrial and research activities have been reported in the field of LIPSS, since their generation in a single-step process provides a simple way of nanostructuring and surface functionalization towards the control of optical, mechanical or chemical surface properties. In this contribution the mechanisms of formation and current trends and applications of LIPSS are reviewed, including the colorization of technical surfaces, the control of surface wetting properties, the mimicry of the natural texture of animals, the tailoring of surface colonization by bacterial biofilms, the advancement of leadless medical pacemakers, and the improvement of the tribological performance of nanostructured metal surfaces.
Two kinds of cyclic poly(D- and L-lactide)s were synthesized, namely CI labeled samples mainly consisting of even-numbered cycles with low dispersity and CII, CIII or CIV-labeled ones consisting of equal amounts of even and odd-numbered cycles with high dispersity and igher molecular weights (Mw up to 300 000). Furthermore, linear poly L-lactide)s were prepared by initiation with ethanol and in both series the molecular weight was varied. The formation of stereocomplexes from cyclic poly(D-lactide)s and all kinds of poly L-lactide)s was performed in dichloromethane/toluene mixtures. The stereocomplexes crystallized from the reaction mixture were characterized in the virgin state and after annealing at 205 °C.
Stereocomplexes free of stereohomopolymers with crystallinities up to 80% were obtained from all experiments in yields ranging from 60 to 80%. Despite the high annealing temperature (maintained for 1 h), little transesterification was observed and the crystallinity slightly increased.
Due to the favorable properties of polymers, their production and thus their input into the environment has increased significantly in recent decades. Currently, FTIR or Raman spectroscopy are mainly applied for the analysis of microplastic particles (MP) in environmental samples. However, these methods have great difficulties in determining metrologically traceable MP values, especially with regard to the limiting values, as preferred in regulation. Therefore, we developed a systematic and fast thermoanalytical method called TED-GC-MS (thermal extraction desorption gas chromatography mass spectrometry), which determines mass contents. Now the current goal is the determination of its process parameters.
This poster illustrates the theoretical requirements for MP analysis (left side) and contrast them with the current state of research (right side).Unexpected practical problems are presented and the relatively new method is discussed concerning the quality requirements of well-established methods such as LC-or GC-MS.
Laser-induced periodic surface structures (LIPSS, ripples) are a universal phenomenon that can be observed on almost any material after the irradiation by linearly polarized laser beams, particularly when using ultrashort laser pulses with durations in the femtosecond to picosecond range. During the past years significantly increasing industrial and research activities have been reported in the field of LIPSS, since their generation in a single-step process provides a simple way of nanostructuring and surface functionalization towards the control of optical, mechanical, biological, or chemical surface properties. In this contribution the mechanisms of formation and current trends and applications of LIPSS are reviewed, including the colorization of technical surfaces, the control of surface wetting properties, the mimicry of the natural texture of animals, the tailoring of surface colonization by bacterial biofilms, the advancement of leadless medical pacemakers, and the improvement of the tribological performance of nanostructured metal surfaces.
Neuartige Materialien, die bekannte (Werk-)Stoffe mit neuen Funktionalitäten ausstatten, spielen eine zunehmend wichtige Rolle im Bereich der Materialforschung und -prüfung. Das Spektrum neuartiger Materialien reicht von der gezielten Oberflächenfunktionalisierung und -strukturierung makroskopischer Materialien, dünnen Beschichtungen bis hin zu mikro- und nanoskaligen Kompositmaterialien und funktionalen Materialien an der Schnittstelle zur Biologie, Biotechnologie, nachhaltige Energiespeicherung und Sensorik. Dabei bieten neuartige Materialien die Chance, Werkstoffe und Produkte mit erweiterter oder verbesserter Funktionalität zu erhalten und Sicherheit bereits im Designprozess zu berücksichtigen. Durch dieses breite Anwendungsspektrum und die Herausforderungen, die solche Materialien für die Sicherheit in Chemie und Technik mit sich bringen, sind diese in allen Themenfeldern der BAM repräsentiert (Material, Analytical Sciences, Energie, Infrastruktur und Umwelt).
Die Aufgaben der BAM erstrecken sich dabei von der Herstellung von Referenzmaterialien für Industrie, Forschung und Regulation, über die Erstellung von standardisierten Referenzverfahren für nachhaltige Messungen im Umwelt- und Lebenswissenschaftsbereich bis hin zur Bereitstellung von belastbaren und zitierbaren Referenzdaten. Durch die genaue Charakterisierung neuartiger Materialien können potentiell problematische Substanzen identifiziert und deren Risiken besser abgeschätzt werden. In diesem Beitrag werden einige aktuelle Beispiele aus diesen Bereichen vorgestellt.